The Light & Motion Press On 3" Speed Ring / Gel Holder (82mm) attaches securely to the Stella Pro Single Point LED (spLED)'s bezel and can be used as an adapter for Chimera 3" soft box speed rings or a holder for 3x3” hard gels. Compatible Lights: Stella 2000, Stella Pro 5000, Stella Pro 7000, Stella Pro 10000c